temperature for 1 day, followed by debenzylation, afforded dpT and pU in 73 and 78% yields, respectively. Neither nucleoside 3′-phosphate nor 3′,5′-diphosphate was formed. 5′-O-Benzoyl thymidine 3′-(2-cyanoethyl)phosphate also reacted smoothly with thymidine at room temperature giving d-bzT3′p(CNEt)5′T in a 54% yield. Adenosine and Guanosine gave the corresponding N3,5′-cyclonucleosides as main products, less
胸苷或
尿苷与 1.5 摩尔当量的
磷酸氢二苄酯、
偶氮二甲酸二乙酯和
三苯基膦在室温下在 HM
PT 中反应 1 天,然后脱苄基,分别以 73% 和 78% 的产率得到 d
PT 和 pU。核苷 3'-
磷酸和 3',5'-二
磷酸均未形成。5'-O-苯甲酰基
胸苷 3'-(2-
氰乙基)
磷酸酯也在室温下与
胸苷顺利反应,以 54% 的产率得到 d-bzT3'p(CNEt)5'T。
腺苷和
鸟苷生成相应的 N3,5'-环核苷作为主要产物,形成的 pA 和 pG 不到 1%。